Quantum charge fluctuations and the polarizability of the single-electron box

被引：28

作者：

Lehnert, KW ^{[1
]}

Turek, BA

Bladh, K

Spietz, LF

Gunnarsson, D

Delsing, P

Schoelkopf, RJ

机构：

[1] Yale Univ, Dept Phys & Appl Phys, New Haven, CT 06511 USA

[2] Chalmers Univ Technol, Dept Microelect & nanosci, Microtechnol Ctr Chalmers MC2, SE-41296 Gothenburg, Sweden

[3] Univ Gothenburg, SE-41296 Gothenburg, Sweden

[4] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[5] Univ Colorado, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.91.106801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure the average charge on the island of a single-electron box, with an accuracy of two thousandths of an electron. Thermal fluctuations alone cannot account for the dependence of the average charge on temperature, on external potential, or on the quasiparticle density of states in the metal from which the box is formed. In contrast, we find excellent agreement between these measurements and a theory that treats the quantum fluctuations of charge perturbatively.

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页数：4

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